(30) And in periods of seven days the moon undergoes its changes. In the first week she becomes half moon; in the second, full moon; and in the third, in her wane, again half moon; and in the fourth she disappears. Further, as Seleucus the mathematician lays down, she has seven phases. First, from being invisible she becomes crescent-shaped, then half moon, then gibbous and full; and in her wane again gibbous, and in like manner half moon and crescent-shaped.

(3) And for this reason the com- mandment is written on the heavenly tables6 in regard to her that giveth birth : " if she beareth a male, she shall remain in her uncleanness seven days accord- ing to the first week of days, and thirty and three days shall she remain in the blood of her purifying, and she shall not touch any hallowed thing, nor enter into the sanctuary, until she accomplished these days which (are enjoined) in the case of a male child. ii. But in the case of a female child she shall remain in her uncleanness two weeks of days, according to the first two weeks, and sixty-six days in the blood of her purification, and they will be in all eighty days."

(8) For three years and three months, one day and [one night] 2

(7) "And in that hour the three-hundred-and-sixty-and-five servitors of the rulers go into her womb and take up their abode in it. The servitors bring the two portions the one to the other, and moreover the servitors withhold the blood of all the food of the woman which she will eat and which she will drink, and they withhold [it] in the womb of the woman up to forty days. And after forty days they knead the blood of the power of all the food and knead it well in the woman's womb. "After forty days they spend another thirty days in building its members in the image of the body of the man; each buildeth a member. I will tell you the decans who will build it [ sc. the body]; I will tell them you at the expansion of the universe.

(20) For the motion of the sun from solstice to solstice is completed in six months - in the course of which, at one time the leaves fall, and at another plants bud and seeds come to maturity. And they say that the embryo is perfected exactly in the sixth month, that is, in one hundred and eighty days in addition to the two and a half, as Polybus the physician relates in his book On the Eighth Month, and Aristotle the philosopher in his book On Nature. Hence the Pythagoreans, as I think, reckon six the perfect number, from the creation of the world, according to the prophet, and call it Meseuthys and Marriage, from its being the middle of the even numbers, that is, of ten and two. For it is manifestly at an equal distance from both.

(1) On the nature of generation it says in revelation, that a woman when she comes out from menstruation, during ten days and nights, when they go near unto her, soon becomes pregnant.